Wedge-bolt lock.



H. O. MARTZ.

WEDGE BOLT LOCK.

APPLICATION FILED JULY 29, 1913.

Patented J an. 6, 1914.

2 SHEETSSHBBT 1.

/NI/ENTOI? Jia 77" a 44 ariz WITNESSES:

A TTORNEY H. O. MARTZ.

WEDGE BOLT LOCK.

APPLIGATION FILED JULY 29, 1913.

Patented J an. 6, 1914.

2 SHEETSSHEBT 2.

- INVENTOI? flurry a Mar-bx 1 BY 1 I A TTORNEY wedge blocks used in connection with the TINTTED STATES FATENT @FFTQE.

HARRY G. MARTZ, OF HARRISBURG, PENNSYLVANIA.

WEDGE-BOLT LOCK.

oeaasa.

Application filed July 29,

To all whom it may concern Be it known that I, HARRY C. MARTZ, a citizen of the United States, residing at Harrisburg, in the county of Dauphin and State of Pennsylvania, have invented certain new and useful Improvements in Wedge-Bolt Locks, of which the following is a specification.

My invention relates to improvements in wedge-bolt locks, and more particularly to locking the wedge-bolts for adjusting the journal boxes of locomotive driving-wheel axles, an object of the invention being to provide improved means for locking the wedge-bolt against accidental rotary movement after the wedge block has been properly adjusted.

A further object is to provide improved means whereby the wedge-bolt may be easily unlocked and turned to adjust the wedge block, and then the locking means quickly moved to operative position.

lVith these and other objects in view the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings: Figure 1 is a view in side elevation of a pedestal and journal box, showing my improvements in connection therewith. Fig. 2 is a fragmentary view, partly in elevation and partly in longitudinal section on an enlarged scale. Fig. 3 is a bottom plan view of Fig. 2. Fig. 4 is a detail perspective view on an enlarged scale of the locking plate. Fig. 5 is a view similar to Fig. 2, illustrating a modification. Fig. 6 is a view in section on the line 66 of Fig. 5. Fig. 7 is a view in section on the line 77 of Fig. 5. Fig. 8 is a detail perspective view illustrating the locking key used in the form shown in Figs. 5, 6 and 7. Fig. 9 is a fragmentary view in side elevation illustrating another modification. Fig. 10 is a bottom plan view of Fig. 10, and Fig. 11 is a top plan of the bolt used in the form shown in Figs. 9 and 10.

1 represents the axle of the driving- Specification of Letters Patent.

wheels of a locomotive, said axle being Patented Jan. 3, 1914.

1913. Serial No. 781,724.

mounted in a journal box 2, the latter capable of sliding in a pedestal 3. One leg 4t of the pedestal has a shoe 5, having a vertical edge which forms a bearing for one side of the journal box 2. The other leg 6 of the pedestal has its inner side inclined to receive a wedge block 7, adapted to be adjusted by my improved wedge-bolt 8, so as to allow the journal box 2 to slide vertically without any lateral movement.

My improved wedge-bolt 8 comprises a relatively long threaded stem 9, which engages a threaded opening 10 in the wedge block 7. Adjacent the lower end of the threaded stem is an annular enlargement 11 which rests upon the pedestal brace 12 and a cylindrical portion 13 turns freely in an opening 141 in the brace. This opening 14. is really an elongated slot to allow the bolt to move laterally with the wedge block, it being understood that the block will move in a direction slightly out of the vertical in its movement up and down the inclined leg 6 of the pedestal 3.

The cylindrical portion 13 is of less diameter than the enlargement 11 so that a shoulder 15 is formed which engages the upper face of brace 12 and the bolt 8 is supported thereby.

A recess 16 is provided in the under face of the brace 1.2 and in this recess 16 a plate 17 is positioned. This plate 17 has a rectangular opening 18, and an elongated recess 19 connecting therewith, and of smaller width. The recess 19 is of substantially the same width as an angular portion 20 on bolt 8 so that when the plate is in the position shown, the bolt is prevented from turning.

A jam nut 21 is screwed on the threaded portion 22 and holds the plate 17 in the recess 16 in the brace 12. A rectangular wrench receiving portion 23 is provided on the lower end of the bolt to turn the same and a cotter pin 24 is projected through an opening in the said portion 23 to prevent the the threaded portion 22, when the bolt can readily be turned to adjust the wedge block 7. When the block 7 has been adjusted, the plate, nut, and cotter pin are returned to their original positions when the bolt will again be locked against turning.

In Figs. 5, 6, 7 and 8, I illustrate a modification in which the cylindrical portion 25 of the bolt 8 is provided with two slots 26' at right angles to each other, and the pedestal brace 27 has registering openings 29 at opposite sides, so that a key 30 can be positioned through the openings 29 and one of the slots 26 to prevent rotary movement of the bolt 8.

and at one end is provided with a depending lug 31 having a shoulder 32'. This lug will prevent the key from being moved toofar into the brace 27 and also facilitates removing the key. At its opposite end the key is provided with a series of openings 33 through any one of which a'cotter pin 34 may be positioned to prevent the key from working loose. These openings 33 are preferably in staggered arrangement so that a small amount of wear on the key can readily be taken up.

By providing the key 30 and the cotter pin 34 to prevent its working loose, I do away with the necessity of the jam nut 21 shown and described in the first form, and the angularenlargement 23 for turning the bolt directly adjoins the cylindrical portion 2-5.

In the modification shown in Figs. 9, 10

and 11, the threaded portion 35 of the bolt part 9 in the other forms, and it turns freely in a vertical opening 36 in pedestal brace 37. The opening 36 extends from the top face of the brace downwardly to a transverse opening 38 adapted to receive a circular enlarge ment 3'9 integral with the bolt and having a series of openings 40 therein adjacent its periphery.

The bottom face of the brace 37 is recessed to receive a plate 41 and this plate and the brace have a tongue and groove interlocked, as shown at 42. With this arrangement the plate 41 must be slid into the recess in the brace 37 and a slot 43 is provided in the plate to receive the bolt, yet permitting it to freely turn. Screws 44 pass through openings in the plate and are secured in the brace thereby securely locking the plate to the brace.

An opening 45 is provided in the plate 41 and registers with any of the openings 40 in the enlargement 39, and a cotter pin 46 is positioned in these registering openings and prevents any rotary movement of the bolt.

When it is desired to adjust the wedgeblock 7, the cotter pin 46 is removed, the bolt turned by means of the angular portion 47 and when the desired adjustment is had the cotter pin is positioned in the registering made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit my self to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is: The key 30 preferably is slightly tapered 1. The combination with a pedestal brace and a wedge block having a screw-threaded opening therein, of a wedge bolt having rotary mounting in the brace, a threaded stem on the bolt engaging the threaded opening in the block, said brace having a recess in its lower face, and bolt locking means in i the recess movable transversely of the bolt, substantially as described.

2. The combination with a pedestal brace and a wedge block having a screw-threaded opening therein, of a wedge bolt having a rotary mounting in the brace, a threaded stem on the .bolt engaging the threaded opening in the block, said brace having a recess in its lower face, a plate in the recess having a rectangular opening of two widths and an angular portion on the bolt adapted to snugly fit in the smaller width of the opening in the plate, substantially as dei scribed. is of greater length than the corresponding 3. The combination with a pedestal, a pedestal brace having an opening therein and. a 1 wedge block having a screw threaded opening therein, of a wedge-bolt, a screw'threaded stem on one end of the bolt engaging the threaded opening in the block, a cylindrical portion on the bolt located in the opening in the brace, an enlargement on the bolt between the cylindrical portion and the stem and bearing on the upper face of the brace, said bracehaving a recess in its lower face, a plate in the recess having a rectangular opening of two widths and an angular portion on the bolt adapted to snugly fit in the smaller width of the opening in the plate, substantially as described. 1

4. The combination with a pedestal, a pedestal. brace having an. opening therein, and a wedge block having a screw threaded opening therein, of a wedge-bolt, a screw threaded stemon one end of the bolt engaging the threaded opening in the block, a cylindrical portion on the bolt located in the opening in the brace, an enlargement on the bolt between the cylindrical portion and the stem and bearing on the upper face of the brace,,said brace having a recess in its lower face, a plate in the recesshavin a rectan u.-

' lar opening of two widths an an angu'ar portion on the bolt adapted to snugly fit in name to this specification in the presence of the smaller Width of the opening in the tWo subscribing wltnesses.

plate, a jam nut on the bolt holding the HARRY O M ARTZ plate in position, and an angular Wrench- 5 receiving portion on the end of the bolt, Witnesses:

substantially as described. M. E. DITTUS,

In testimony whereof I have signed my CHAS. E. POTTS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

